MIC2937A-3.3WU-TR

Product Overview

Category

The MIC2937A-3.3WU-TR belongs to the category of voltage regulators.

Use

This product is commonly used in electronic circuits to regulate and stabilize voltage levels.

Characteristics

• Voltage Output: 3.3V
• Package Type: WU (TO-263)
• Essence: Low dropout voltage regulator
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

The MIC2937A-3.3WU-TR has the following specifications:

• Input Voltage Range: 4.5V to 26V
• Dropout Voltage: 450mV at 1A
• Output Current: Up to 1A
• Line Regulation: 0.04% typical
• Load Regulation: 0.2% typical
• Quiescent Current: 75µA typical
• Thermal Shutdown Protection: Yes
• Short Circuit Current Limit: 1.5A typical

Detailed Pin Configuration

The MIC2937A-3.3WU-TR has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. VOUT (Output Voltage)

Functional Features

• Low dropout voltage: The MIC2937A-3.3WU-TR exhibits a low dropout voltage, allowing it to regulate voltage even when the input voltage is close to the desired output voltage.
• Thermal shutdown protection: This feature protects the regulator from overheating by shutting down the device if the temperature exceeds a certain threshold.
• Short circuit current limit: The regulator limits the current in case of a short circuit, preventing damage to the device.

Advantages and Disadvantages

Advantages

• High output current capability
• Low dropout voltage
• Thermal shutdown protection ensures device safety
• Short circuit current limit protects the regulator and connected components

Disadvantages

• Limited input voltage range (4.5V to 26V)
• Higher quiescent current compared to some other regulators

Working Principles

The MIC2937A-3.3WU-TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The MIC2937A-3.3WU-TR finds applications in various electronic systems, including but not limited to:

1. Power supplies for microcontrollers and digital circuits
2. Battery-powered devices requiring a regulated voltage supply
3. Automotive electronics
4. Industrial control systems
5. Communication equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the MIC2937A-3.3WU-TR are:

1. LM1117-3.3: A popular low dropout voltage regulator with similar specifications.
2. LT1763-3.3: Another high-performance regulator with low dropout voltage and adjustable output.
3. TPS79633: A fixed-output voltage regulator with low dropout voltage and high PSRR (Power Supply Rejection Ratio).

These alternative models offer similar functionality and can be used as substitutes based on specific requirements.

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